1# OhosImageSourceUpdateData 2 3 4## Overview 5 6The **OhosImageSourceUpdateData** struct defines the update data option of the image source. It is obtained by calling [OH_ImageSource_UpdateData](image.md#oh_imagesource_updatedata). 7 8\@Syscap SystemCapability.Multimedia.Image 9 10**Since** 11 1210 13 14**Related Modules** 15 16[Image](image.md) 17 18 19## Summary 20 21 22### Member Variables 23 24| Name| Description| 25| -------- | -------- | 26| [buffer](image.md#buffer-22) = nullptr | Defines a pointer to the buffer for storing the update data.| 27| [bufferSize](image.md#buffersize-22) = 0 | Defines the size of the buffer.| 28| [offset](image.md#offset) = 0 | Defines the offset of the update data in the buffer.| 29| [updateLength](image.md#updatelength) = 0 | Defines the length of the update data in the buffer.| 30| [isCompleted](image.md#iscompleted) = 0 | Defines whether the image source data update is completed.| 31